[R] Element by element mean of a list of matrices

[Claudia Beleites]

Peter,

as the matrices in the list have the same shape, you can unlist them 
into an array and then use rowMeans.

HTH

Claudia

Am 15.03.2011 21:17, schrieb hihi:
> Hi All,
> is there any effiective and dense/compact method to calculate the mean of a list of - of course coincident - matrices on an element by element basis? The resulting matrix' [i, j]-th element is the mean of the list's matrices' [i, j]-th elements respectively...
> Iterating by for statement is quite straightforward, but I am seeking for a more elegant solution, and my attempt with the apply family of functions did not work.
>
> Thank you,
> by
> Peter
>
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